def main():
    x = int(input())

    grade = 0
    for i in range(8):
        if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

    print(grade)

if __name__ == "__main__":
    main() def main():
    x = int(input())

    grade = 0
    for i in range(8):
        if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

    print(grade) main x = int(input()) x int(input()) int input() input grade = 0 grade 0 for i in range(8):
        if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

     i range(8) range 8 if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

     (400 + 200 * i) <= x < (400 + 200 * (i + 1)) (400 + 200 * i) <= x 400 + 200 * i 400 200 * i 200 i x 400 + 200 * (i + 1) 400 200 * (i + 1) 200 i + 1 i 1 grade = 8 - i grade 8 - i 8 i print(grade) print grade if __name__ == "__main__":
    main() __name__ == "__main__" __name__ "__main__" main() main def main():
    x = int(input())

    grade = 0
    for i in range(8):
        if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

    print(grade) def main():
    x = int(input())

    grade = 0
    for i in range(8):
        if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

    print(grade) main
def main():
    x = int(input())

    grade = 0
    for i in range(8):
        if (400 + 200 * i) <= x < (400 + 200 * (i + 1)):
            grade = 8 - i

    print(grade)

if __name__ == "__main__":
    main()